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Potterton Condensate Pressure Switch 5142127

Potterton

Potterton Condensate Pressure Switch 5142127

Condensate pressure switch for Potterton Commercial Sirius FS boilers, used to monitor the condensate system.

Manufacturer part no.
5142127
Showing prices

£262.80

£219.00 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

This is the Potterton condensate pressure switch, supplied under part number 5142127. It is a boiler component fitted within the condensate management circuit of Potterton Commercial appliances. The switch monitors pressure within the condensate system and signals the boiler controls so that safe operation is maintained.

Signs this part needs replacing

  • The boiler locks out or fails to fire with a condensate-related fault code showing
  • Fault codes or diagnostics point to the condensate pressure switch circuit
  • The boiler runs intermittently and shuts down during or after a heating cycle
  • Condensate has been present in the pressure switch or its sensing lines
  • The switch fails to respond when the condensate path is cleared or refilled

Before you order

  • Confirm the part number on the existing switch matches 5142127
  • Check the appliance model and variant against the Sirius FS 400 or Sirius FS 525 listings
  • Inspect the condensate trap and sensing lines for blockages or trapped water before replacing the switch
  • Verify the fault is traced to the pressure switch rather than the boiler control board

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.